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Updated: May 22, 2025

Production of E. coli-expressed Self-Assembling Protein Nanoparticles for Vaccines Requiring Trimeric Epitope Presentation
Published on: August 21, 2019
A miniature low-immunogenic platform for the biosynthesis of self-assembling protein nanoparticles
Almina I Polinova1, Anna V Serkina1, Marina V Volkova1
1National Research Center «Kurchatov Institute», Moscow, 123182, Russia.
None:
Aims: Previously, to obtain antigen-presenting self-assembling protein nanoparticles (SAPN), we developed a biosynthetic platform combining the self-associating peptide L6KD and the SUMO protein. In the current work, the immunogenic SUMO was replaced with an artificial 30 amino acid long peptide pepA1. Methods: The immunogenic properties of the pepA1-SAPN were tested in mice using the pneumococcal PhtD19 and ovalbumin OVA257-280 antigens in the absence of adjuvants. Results and Conclusions: The updated SAPN showed a 100% seroconversion rate and low immunogenicity of the platform. Given the effective synthesis and improved purification procedure, the pepA1-based miniature platform looks promising for development of vaccines and vehicles for targeted delivery.
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